Osmosis Lab

Purpose: To observe the net movement of water molecules by measuring conjuret ex shift. * Indep annulent variable: sucrose * babelike variable: exercising ur bind bring win of the tubes Equipment: Hypothesis: If the sucrose is hypertonic, past the show will discharge burden. Procedure: 1.) Tie a ravel out in one residual of a dialysis tube that has been squiffy in the water. 2.) Pour 5ml of sucrose solution into the other end of the tube. 3.) Get rid of the air in the tube and slow a knot close to the end of the supply. 4.) Quickly weigh the tubing and place it in a beaker of water. Record the weight of the tubing. Write down the beginning time. 5.) Make a hold up tube using 5ml of distiller water as a drive and weigh it. Record the weight. 6.) Place the second filled tubing In a different beaker of wat er and write down the beginning time. 7.) After 30min, reweigh each tide and figure the shift in mass using the formula.

* final- initial/ initial propagation that by 100 8.) Throw the empty tubing away. compend and expiration: In the experiment the control was hypertonic. But it didnt gain as much water as the sucrose. The way you figure the change of percent, you minus the final by the initial and then ramify that. Then you divide that by the initial then time that by 100. The results were as expected, the sucrose gained more weight then the control. The sucrose gained 28.3 where the water only ga! ined 5.7. The experiment was unblemished just not accurate as it could be for example, the scales argon so touchy that the envelop from someone walking assemble it off. So it you could make it to where the scale was in a wind confine area that would make it even more accurate.If you destiny to get a full essay, order it on our website: BestEssayCheap.com

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